Propeller with detachable blades - has feet on blades bolting onto depressions in hub and includes streamline sleeve for hub

摘要

The propeller has a hub,whose removable blades blades fit with feet in mounting faces on the hub (1). The propeller incorporates a streamlining cylindrical cover (21), which has a greater axial length than the hub. The cylinder, which can be made from plastics, has openings (22) through which the blades are mounted.The cylinder may have diffuser-like enlarged,downstream end(24). USE/ADVANTAGE - For sorting boats and yachts,without need for high quality material for the hub and precise hydrodynamic contours.